Android

 1.     2. Code Implementation /*** CategoryView. java * @ author zimo2013 * @ see http://blog.csdn.net/zimo2013 **/public class CategoryView extends LinearLayout implementsOnCheckedChangeListener {private LayoutInflater inflater; public

1. Do not use static variables unless static constants (static final ). Http://blog.csdn.net/zhangyue0503/article/details/7614944 2. Define a custom MyApplication that inherits android. app. Application and defines global variables.When the

Android provides the GestureDetector class to identify users' gesture operations. This class provides two listening interfaces: OnGestureListener (processing click messages) and OnDoubleTagListener (processing double-click messages ). The

Android does not actually have the concept of a dialog box, and some just use PopupWindow to implement the effect of a dialog box. The following is a complete example and usage.Create a PromptWindow class Package com. friendlocation; import java.

First, we will introduce the function. I want to achieve the dynamic loading layout effect. Previously, we used the new component method, but the android memory is limited, so there will be more than 500 new objects, to reduce new objects, I decided

This small example contains knowledge points: 1. Use of Thread 2. Use Handle to send data 3. Obtain and display network images Code first package com.example.getwebimage;import java.io.IOException;import java.io.InputStream;import

I. Steps for using service components: (make a text message bug ,) 1. Customize a class: Inherit the android. app. Service class and override some methods: Public class MyServiceextends Service {   @ Override Public IBinder onBind (Intent arg0 ){ //

BroardcastReceiverIntroduction Broadcast receiver (BroadcastReceiver) is one of the four major Android components used to receive broadcast Intent. The sending of broadcast Intent is achieved by calling Context. sendBroadcast () and Context.

If USB cable is not used, how does the pad receive files from the PC? I am using a wireless router at home, and I use WiFi for pad connection. Start the service program getfile. py-mode server on Windows PC. import sys, os, thread, timefrom socket

  You can write it in this way. Play. py   # -*- coding: utf-8 -*-import androidimport osdroid = android.Android()path = u'/sdcard/sl4a/test.mp3'url = u'file://' + pathif os.path.exists(path): droid.startActivity('android.intent.action.VIEW',url,'

Activity declaration cycle Exit the entire program from multiple activities, for example, from A-> B-> C-> D. In this case, I need to exit the program directly from D. Online materials :{Both finish () and system (0) can exit a single activity. No

Main Code: (with comments) MyView =. addView (view, 0 "DrawAllocation" onMeasure (widthMeasureSpec, (getChildCount ()! = 2 "only one View in MyView" = getChildAt (0 = getChildAt (1 "NewApi" onLayout (changed, l, t, r, + "," + t + ", "+ r +", "+

Package com. hzhi. my_sax; import java. util. arrayList; import android. OS. parcel; import android. OS. parcelable; public class school implements Parcelable {public static final String tag_name = "School"; public String name; public String code;

11:25:22 Reprinted from: http://www.open-open.com/lib/view/open1328836804515.html Many times, the commonly used controls in android cannot meet our needs, so we need to customize a control. Today, I made an example of a custom control to share with

Software Card Emulation in NFC-enabled Mobile Phones: GreatAdvantage or Security Nightmare? Michael Roland NFC Research Lab Hagenberg University of Applied Sciences Upper Austria Softwarepark 11,423 2 Hagenberg/Austria

First: onMeasure( widthMeasureSpec, mMaxChildWidth = 0= 0 modeW = 0, modeH = 0 (MeasureSpec.getMode(widthMeasureSpec) !== (MeasureSpec.getMode(heightMeasureSpec) !== childWidthMeasureSpec = childHeightMeasureSpec == (count == 0 (

First, the pop-up window style   1 　　@null 　　true 　　false 　　@android:color/transparent 　　@android:color/transparent 　　true false   Then the java code PopDateWindow Window window = Context context = ArrayList

A. In onCreate method of a, first call super. onCreate (), public void onCreate(Bundle savedInstanceState) { … root = new LinearLayoutSoftKeyboardDetect(this, width, height); …}public void init() { CordovaWebView webView = new

17:57:17 1. Android provides two types of event processing: callback-based and listener-based event processing;1.1 For listener-based event processing, the main approach is to bind a specific event listener to the Android interface component;1.2

We have discussed how to use HierarchyViewer and Android lint to optimize our program. This article is summative and uses a small example to explain how to optimize the application layout. This example is provided on the android official website.